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Product Info - Item 66178

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Caster; Swivel; 6" x 1-1/4"; Flat Free (Grey); Hollow Kingpin (1/2" bolt hole); Zinc; Ball Brng; 150# (66178)

$25.26

Quantity Discounts
1-8
$25.26
9-15
$23.49
16-31
$22.99
32+
$21.98
Call with higher quantities.
Caster; Swivel; 6" x 1-1/4"; Flat Free (Grey); Hollow Kingpin (1/2" bolt hole); Zinc; Ball Brng; 150# (Shepherd PGS60400ZN-NOM21(GG))

  • Wheel Diameter: 6"
  • Tread Width: 1-1/4"
  • Material: Foam-Filled Flat Free Tire (Gray)
  • Load Rating (Per Item): 150 pounds
  • Finish: Zinc
  • Connector Details: Hollow Kingpin (1/2" bolt hole)
  • Bearing: Ball Brng
  • Load Height: 7-1/8"
  • Swivel Radius: 4-1/2"
  • Usually Ships in: 7-10 days (depending on quantity ordered)



  • Flat Free (also known as semi-pneumatic) are extremely popular wheels. Made to perform like a pneumatic tire, they are filled with a lightweight, microcellular polyurethane foam. They retain the lightweight, bounce and cushion like a pneumatic tire, without the nuisance of air leaks.

    Flat free wheels will typically experience flat-spotting even when loaded within the acceptable weight limits. They tend to flat spot immediately, a little more after a few hours, a little more at 24 hours, and not much more after that regardless of time. Flat-spotting is more noticeable in warmer weather. The flat-spotting will roll-out and dissipate after a few minutes of rolling, depending on the size of the standing load and extent of the flat-spotting. This is a normal occurrence of these wheels and is not a product failure. If your application cannot tolerate this temporary condition, another material type may be preferable.

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